Buoen L C, Zhang T Q, Weber A F, Turner T, Bellamy J, Ruth G R
Department of Veterinary Diagnostic Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul 55108, USA.
Equine Vet J. 1997 Jan;29(1):60-2. doi: 10.1111/j.2042-3306.1997.tb01638.x.